Tool for setting fastener parts



' D. BOURQUE.

TOOL FOR SETTING FASTENER PARTS.

' APPLICATION FILED FEB. 16. 1921.

Patented D'e0.12,192 2.

.BOMWW I f- 127122621202 David 534'.

d ll

Patented Dec. 12, i922.

DAVID BOURQUE, OF AMESBURY, MASSACHUSETTS, ASSIGNOR TO G. W; MURPHYCOMPANY, OF AMESBURY, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

'roor. non sn'rcrrne rnsrnivnn rears.

Application filed February 16, 1921. Serial No. 445,354.

To all whom it may 00mm.-

Beit known that 1, DAVID Boungun, a'

citizen of the United States, and a resident of Ames'bury county ofEssex and State of Massachusetts, have inventedan Improvementin Toolsfor Setting Fastener Parts, of which the following description, in connection with the accompanying drawings, is a specification, likecharacters on the drawings representing like parts. i

This invention has to do with a tool par ticularly designed for securingelements of separable fasteners to vehicle curtains or ther parts towhich it is desired to attach them. Herein I have shown a toolparticularly designed for securing the eyelet of a turnbutton fastener",such eyelet being of the type shown in my application Serial No."349,749, filed-Jan. 6, 1920. k Y

My invention will best be understood by reference to the followingdescription of the form thereof which I haveshown byway of example I inthe accompanying drawings; whereinzf i I Fig. 1 is a plan view of aneyelet member for a turnbutton fastener for use with which the toolshown is particularly de signed;

Fig. 2 is a section on the line 22 of Fig. 1; k

Fig. 3 is a partial elevation partial section of a tool embodying myinvention; 7

Fig. 4; is a fragmentary section showing the eyelet about to be set bythe tool, the section of the eyelet being substantially on the line 4l-lofFig. 1; and

Fig. 5 is a similar view showing the setting operation completed.

Referring to the drawings, I have there shown an eyelet member 9 of aturnbutton fastener attached to a curtain 11, such eyelet in the formshown having a generally circular contour but being provided with anelliptical opening 13. The eyelet is scoured to the curtain by means ofprongs 15 extending rearwardly from the outer margin thereof and adaptedto extend through the curtain 11 and be clinched over a washer 17. Inthe form of eyelet shown the margin of the opening 13 is provided withrearwardly extending ear members 19 which project through the opening inthe curtain which aligns with the opening 13 and are adapted to makecontact with the supporting surface of the turnbutton member proper asdescribed in my application above possible deformation of theeyeletitself by the clinching blows and particularly a bending of one oftheears 19 which may cause thefsanie to bind on themale member of thefastener. My invention provides a tool whereby eyelets may be rapidlyand accurately set without any such troubles as are here referred to.

Referring to F ig.3 I have there shown a t'oolembodying my invention andincluding a stock 21 having an end face 23 which may serve as aclinching shoulder for flattening down the prongs of the eyelet in themanner shown in Fig. 5, the outer diameter of this facet however,preferably being such as not to extend to the'roots of the prongs strongspring 29 interposed between the upper end of the sleeve and a head 31on the end of the stock, which spring nor mally thrusts the sleeveforward against a stop provided by an enlargement 33 at the end of thestock and into the position shown in Fig. 3 where the upsetting shoulder27 is in advance of the end face 23 of the stock. Referring to Fig. 3 itwill thus be i seen that if the tool is properly positioned over theassembled parts of the eyelet, as shown in Fig. 4:, preferably by meanshereafter described, and the tool pressed downwardly as by the blow of amallet, the stock 21 and sleeve 25 are moved downwardly as a. unit andthe shoulder 27 embracing the several prongs 15 will simultaneously anduniformly upset them and turn. them inlojwhere they pass through thewasher 17.

wardly. In this action they will be carried A ting operation.

5 and the face 23 will flatten down and firmly clinch the prongs 15.

' Suitable means are providedfor positioning thetool and herein for thefurther pur-l pose of supporting the parts forming the inner wall of theeyelet" opening 13 and preventing them from being deformed in thesetting operation. For 'this purpose there is mounted in the end of thestock a pilot member 35 having an end 37 formed. to fit the openingl3gand to support the walls thereof, such as the ears 19 in the set-Herein this pilot member 35 telescopes within the stock 21,.beingsupportedtherein by a cross pin 39 which plays in a suitable slot in thepilot and being normally supported in its outward position beyond thesetting face of'the sleeve 25, as shown in Fig. 3, by a relatively lightspring 41.

To accommodate the ears 19 and prevent them from being damaged by thesetting face 23ofthe stocln the' body portion of the pilot is madelarger than the end 37 which fits the opening in the eyelet and thuswhen the pilot is depressed within the stock, as shownin Figifi, aclearance 43 'is providedfor, intofwhich the ears 19 may project, thisclearance being located inwardly of the setting face 23 andsurr'oundingthe end 37 of the pilot, against which the ears 19lie. Thus the ears 19'are not only sup ported and held in their position by the end 37 of thepilot but provision is made whereby the setting face 23 will not come incontact with them but can pass beyond. them firmly to clinch theattaching prongs 15.

v Having thus described in detail the particular form of tool shown byway of example in the accompanying drawings, the principles exemplifiedthereby which I claim as new and desire to secure by Letters Pat ent Ishall express in the following claims:

1. A tool for setting eyelets of separable fasteners which have acentral opening and a set of prongs around the margin of the eyeletcomprising apilot to fit and support I the Walls of the eyelet openingandan upsetting shoulder radially remote therefrom to oppose the prongsof theeyelet.

2. A tool for setting eyelets of separable fasteners comprising astockhaving a pilot to fit and support the walls of the eyelet opening,a sleeve carried by the stock having an upsetting shoulder facing theprongs of the eyelet and a spring supporting the sleeve. i

3. A tool for setting eyelets of separable fasteners which have acentral opening and forming an'upsetting shoulder and a spring normallyholdingthe edge of said sleeve beyo'n'd'the end face of the stock.

5. A tool for setting'eyelets of separable fasteners comprising; a stockhaving a clinching face, a pilothaving a reduced end adapted to fit andsupport "the walls ofthe eyelet opening, said pilot being yieldablymounted in said stock and providing a space between said reduced end andclinching face 7 to receive portions of the eyelet,

6. A tool for setting eyeletsiof separable fasteners comprising a stock,a sleeve sur' rounding the stock and having an edge forming an upsettingshoulder normally yieldably supported beyond the end of the stoclrand a,pilot yieldably held in the stock having a'reduced end shaped to fitandsupport the walls of the eyelet opening, said end being normallysupported beyond the edge of said sleeve.

In testimony whereof, have signed my name to this specification.

DAVID ,BOURQUE.

